Re: [Discuss-gnuradio] Re: USRP2 startup

[Matt Ettus]

> Two questions for you:
>
> 1.  When I'm trying to look at more data than the laptop can handle, the
> console prints "S" characters.  What does that signify; I'd have thought
> O or U would still apply?
>   

S means that the PC is seeing 2 successive packets which do not have 2 
successive sequence numbers.  This means that the host computer has 
dropped the packets in between.  It is essentially the equivalent of an 
overrun.  The USRP2 does not actually overrun, however, since it is not 
throttled by the host computer.

> 2.  The usrp2_fft.py program is pretty nice, but changing the frequency
> in the input box doesn't seem to work -- when I type something in, I get
> an "OK" at the bottom left of the window, but the display freezes and
> nothing further happens.
>   

That part is not implemented yet.

Matt